Yes – sí
(Pronounced see)
To remember that yes is pronounced see (sí) in Spanish, use the following mnemonic:
She said her answer was yes – but only if they could get married at sea (sí).

Examples of sí (yes) in a sentence
Sí, quiero un café, gracias.
(Yes, I would like a coffee, thank you.)
Ella dijo que sí a la propuesta.
(She said yes to the proposal.)
Sí, puedo ayudarte con eso.
(Yes, I can help you with that.)